All non-source code assets are licensed as CC BY-SA.

Creative Commons Deed
This is a human-readable summary of the full license below.
You are free:

to Share— to copy, distribute and transmit the work, and
to Remix— to adapt the work for any purpose, even commercially.

Under the following conditions:

Attribution— You must attribute the work in the manner specified by the
author or licensor (but not in any way that suggests that they endorse
you or your use of the work.)  Share Alike—If you alter, transform, or
build upon this work, you may distribute the resulting work only under
the same, similar or a compatible license.  With the understanding
that:

Waiver— Any of the above conditions can be waived if you get
permission from the copyright holder.  Other Rights—In no way are any
of the following rights affected by the license: your fair dealing or
fair use rights; the author's moral rights; and rights other persons
may have either in the work itself or in how the work is used, such as
publicity or privacy rights.

Notice—For any reuse or distribution, you must make clear to others
the license terms of this work. The best way to do that is with a link
to https://creativecommons.org/licenses/by-sa/3.0/
